23 constexpr fs::copy_options ME(int val) { return static_cast<fs::copy_options>(val); }  in ME()  function
40           E::none == ME(0),  in main()
44           E::skip_existing      == ME(1) &&  in main()
45           E::overwrite_existing == ME(2) &&  in main()
46           E::update_existing    == ME(4),  in main()
50           E::recursive == ME(8),  in main()
54           E::copy_symlinks == ME(16) &&  in main()
55           E::skip_symlinks == ME(32),  in main()
59           E::directories_only    == ME(64) &&  in main()
60           E::create_symlinks     == ME(128) &&  in main()
61           E::create_hard_links   == ME(256),  in main()